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The energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is known as lattice energy.
Environmental pollution caused by oxides and oxyacids f nitrogen and sulphur
The expression for Bohr's radius of an atom is: (1) r= n 2 h 2 / 4 Π 2 me 4 z 2 (2) r= n 2 h 2 / 4 Π me 2 z 2 (3) r= n2h2/4 Π me 3
laws of chemical combination
How do you account for the following: (a) All scandium salts are white. (At. No. of Sc = 21) (b) The first ionization energies of the 5d transition elements are higher than
Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
formula of acetic acid
How to know degree of superheat from psychometric chart?
emf series and its applications
The maximum number of electrons that can be accommodated in f sub shell is : (1) 2 (2) 8 (3) 32 (4) 14 Ans: 14
what are the pysical propities of iodofrom
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